How to choose a reliable export agent in yiwu?

Before you choosing the right Yiwu agent , please check: 1) How many employees? 0 or 2~9 or 10~19 or 20~49 or 50~99 or 100+? You’d better come to their office to have a meeting with them and talk with their staffs, so that you can know the real number of their employees. 2) How big is the office? No office (Disposable office) or 20 square meter or 200 square meter or 2,000 square meter? 3) How big is the warehouse? No warehouse (Disposable warehouse) or 500 square meter or 5,000 square meter? 4) Do they have cars? 0 (taxi every day) or 1 or 2 or 3+ cars? Why need cars? It is very very difficult to take a taxi in yiwu. We use our company cars to: a) Pick up from shanghai pudong airport, hangzhou xiaoshan airport, yiwu airport, yiwu train station to the hotel in yiwu. b) Go to factories in shanghai, zhejiang province, jiangsu province, fujian provine, etc. c) Send customers from hotel to Yiwu market , market to hotel every day. 5) Are they registered in Yiwu Industrial and Commercial Bureau? Can they show you Business License No. , Organization Code Certificate No. , Tax Registration Certificate No. and Import & Export Enterprise Code?